NEX-5177 backport illumos 6345 remove xhat support
Reviewed by: Kevin Crowe <kevin.crowe@nexenta.com>
6345 remove xhat support
Reviewed by: Dan McDonald <danmcd@omniti.com>
Reviewed by: Garrett D'Amore <garrett@damore.org>
Approved by: Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org>
NEX-5164 backport illumos 6514 AS_* lock macros simplification
Reviewed by: Kevin Crowe <kevin.crowe@nexenta.com>
6514 AS_* lock macros simplification
Reviewed by: Piotr Jasiukajtis <estibi@me.com>
Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com>
Reviewed by: Albert Lee <trisk@omniti.com>
Approved by: Dan McDonald <danmcd@omniti.com>
re #13613 rb4516 Tunables needs volatile keyword

*** 306,316 ****
   *
   * One important class of applications that are disabled are those
   * that have been transformed into malicious agents using one of the
   * numerous "buffer overflow" attacks.  See 4007890.
   */
! int noexec_user_stack = 0;
  int noexec_user_stack_log = 1;
  
  int segvn_lpg_disable = 0;
  uint_t segvn_maxpgszc = 0;
  
--- 306,316 ----
   *
   * One important class of applications that are disabled are those
   * that have been transformed into malicious agents using one of the
   * numerous "buffer overflow" attacks.  See 4007890.
   */
! volatile int noexec_user_stack = 0;
  int noexec_user_stack_log = 1;
  
  int segvn_lpg_disable = 0;
  uint_t segvn_maxpgszc = 0;